Panasonic SC-AK57 - Manual (Page 48)

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Before requesting service for this unit, check the chart beiow for a possible cause of the problem you are experiencing. Some simple checks or
a minor adjustment on your part may eliminate the problem and restore proper operation.
If you are in doubt about some of the check points, or if the remedies indicated in the chart do not soive the problem, refer to the directory of
Authorized Service Centers (enclosed with this unit) to locate a convenient service center, or consult your dealer for instructions.
Problem Probable cause(s) Suggested remedy
Reference
page(s)
Problems common to all systems
ECO mode is on but the
display panel still lights
up. DEMO mode is on. Turn DEMO mode off. 22
The location of the various
musical instruments Is not
well defined.
The (+) and (-) connections to one of the
speakers are reversed.
Connect the speaker cords correctly. 10, 12
The left and right sounds
are reversed.
The left and right connections to the
speaker are reversed.
Connect the speaker cords correctly. 10, 12
LOW frequency sounds
cannot be heard. Either the left or the right LOW speaker
cable is not connected.
Connect the left and right speaker cables to
the LOW terminals.
10
When listening to the
external unit, the left and
right sounds are reversed.
The left and right connections to the
external unit are reversed.
Connect the external unit's cord correctly. 16
There is no sound when a
source is being played.
The (+) and {-) wire of the speaker cords
are shorted.
Switch the system to the standby mode,
and reconnect the speaker cords so that
they are not shorted. Then switch on the
power.
10
“ERROR” message
appears on the display, Wrong operation has been done. Operate the unit correctly by following the
operating instructions.
“—;—” appears on the
display. •You plugged the power cord in for the first
time.
•There was a power failure recently.
Set the time. 24
“F61” appears on the
display. Check if the speaker cords have shorted. If they are not shorted then there is a power
supply problem. Consult your dealer for
assistance.
While listening to FM broadcasts
There is a “rushing noise”
during a stereo broadcast
which is not audible
during a monaural
broadcast.
The transmitting station is distant. If you are using an indoor antenna, change
to an outdoor antenna.
14
You hear excessive noise
during a stereo broadcast,
and occasionally the
sound disappears. The installation location and orientation of
the antenna are unsuitable.
The stereo indicator
(“STEREO”) flickers and
does not light completely.
The transmitting station is distant.
The power of the TV set or VCR is ON. Try switching off the TV set or VCR.
The sound during a stereo
broadcast is highly
distorted.
There is a building or mountain nearby.
[Distortion is caused by interference
between the signal from the transmitting
station (direct wave) and the signal
reflected from the building or mountain
(reflected wave).]
Use a high-grade outdoor antenna, and
install it in a good location, height, and
orientation for reception.
14
While listening to AM broadcasts
You hear an unusual beat
sound. You are using the system at the same time
you are playing a JV set.
Switch off the TV set, or use the system
further away from it.
You hear a iow-frequency
hum.
The antenna wire is near the power cord. Separate the antenna wire from the power
cord.